Label an axis for easy recognition

Submitted by Frédéric Parrenin @parrenin

Description

Currently, when creating a chart with many axes, it is not easy to deal with them because they are only labelled AxeY1, AxeY2, etc. It would be easier to have meaningful labels.
I see two possible solutions:
1) either we create a field with a label
2) or with use the title of the axis